Here is a link to a video (as i promised to upload)

http://rapidshare.com/files/348593131/hmp_01.wmv.html

I will upload some more soon.

And yes I agree that this has to be done very careful and with sterile needles and the risk is big, because of the risk of infection.

As mostsleek said I also tried a few times, but just could not get the needle through the outer layer of the testicle. The pressure was just too much and I was thinking no way this needle will ever break this layer and I got scared and did not push harder. It is probably a big rush when you manage to puncture the outer layer of the ball and see the needle going in. The anticipation is big.